Judge mode replays sensor traces on a built-in scene. The SHA-256, dHash and seal card are computed for real, on this device.
Live sensorscamera · IMU · GNSS
Point the rear camera at the subject, tap Start, walk ~2 steps toward it, then tap Seal within 20 s. Needs HTTPS + camera, motion and location permission. Prefer the scripted demo? Switch to Judge mode.